Anyone ever seeking funding for racing has insisted that “racing improves the breed.” Better brakes, tires and suspensions, as well as sequential gearboxes and more efficient and responsive engines are the proof. Aerodymaic aids, too, play a key role. Sometimes, though, you have to scratch your head and ask how much a nose that’s longer by 18 inches, a wing mounted two feet above the trunk lid or a massive front air dam help when negotiating speed bumps, dropping the kids at school or cruising down the interstate at 65.